The political left is relying more and more on manufactured outrage to shut down debate on a range of political topics. That’s the warning delivered in the book End Of Discussion, and it’s the message the book’s authors shared Monday with a John Locke Foundation audience.

Fox News contributors Guy Benson and Mary Katharine Ham explained during a Headliner luncheon how ever-evolving standards about subjects fit for discussion tend to marginalize the political right and protect the left from being forced to engage in debate about ideas.

In the video clip below, Benson and Ham explain how this tactic has affected discussions of religious liberty and gay rights.

Click here to watch the full 1:18:06 event.